Article
Chemistry, Physical
Shuning Liu, Ling Tu, Chenchen Liu, Lifen Tong, Zhongxiang Bai, Guo Lin, Kun Jia, Xiaobo Liu
Summary: This study focuses on preparing high-temperature resistant composites by introducing nitrile-functionalized agents on the surface of multiwalled carbon nanotubes. The resulting composites exhibit excellent mechanical, thermal, and dielectric properties, making them suitable for energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Polymer Science
Yong You, Siyi Chen, Shuang Yang, Lianjun Li, Pan Wang
Summary: This study proposes a method for preparing highly thermal-resistant dielectric nanocomposites by decorating TiO2 nanoparticles on the surface of BN nanosheets and combining them with a PEN matrix. The experimental results show that this nanocomposite material has significantly improved glass transition temperature and dielectric properties, as well as good thermal stability.
Article
Engineering, Electrical & Electronic
Yumeng Luo, Guangyao Yang, Lifen Tong, Xiaobo Liu
Summary: In this study, silicone powder was introduced into PEN/MWCNTs composites as a solid lubricant to improve flowability and processability. The experimental results showed that the addition of silicone powder significantly improved the fluidity of the composites and enhanced their processing and dielectric properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Polymer Science
Tong Cao, Lingling Wang, Guo Lin, Yanjie An, Xiaobo Liu, Yumin Huang
Summary: In this study, a novel polymer material PEN was designed and synthesized, which showed ultralow dielectric constant and excellent mechanical properties due to the introduction of low polarizability trifluoromethyl group and porous structures.
Article
Engineering, Multidisciplinary
Linsen Zuo, Kui Li, Dengxun Ren, Mingzhen Xu, Lifen Tong, Xiaobo Liu
Summary: By modifying the aramid fiber, a composite material with improved performance, including surface morphology, interfacial adhesion strength, and interlaminar shear strength, was obtained.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Tianrui Li, Guo Lin, Liang He, Yunqing Xia, Xiaoqian Xu, Yingfa Liu, Lifen Tong, Xiaobo Liu
Summary: In this paper, bisphenol A was introduced into the molecular chain by molecular design to improve the crystallization ability of PEN. Different structures of PEN copolymers were synthesized and studied for their crystallization ability, thermal and mechanical properties. The effects of hot-pressing conditions on the properties of hydroquinone/bisphenol A copolymerized PEN were investigated, and the best processing conditions were determined. This study provides guidance for the research of semi-crystalline PEN and offers a theoretical basis for its applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Wanru Zhang, Liang He, Ting Wang, Xiaobo Liu, Lifen Tong
Summary: A series of PENs with different molecular weights were synthesized and their effect on the performance of PEN and PEN-based FCCL were studied. The PENs showed excellent thermal properties and long service life. The tensile properties of PENs increased with increasing molecular weight, while water absorption decreased. However, the peel strength of FCCL showed an opposite trend to the tensile properties of PEN, with PEN-2 showing the highest peel strength.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Liang He, Xiaobo Liu, Lifen Tong
Summary: This study prepared high-performance composite electric insulating materials using PEN and BCB as raw materials by post-solid phase chemical reaction. The performance of PEN/BCB composites could be tuned by adjusting the content of BCB resin and treatment temperature. The research found that the composite material has excellent thermal properties, mechanical properties, and low dielectric constant, making it suitable for high-temperature environments.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Liang He, Lifen Tong, Zhongxiang Bai, Guo Lin, Yunqing Xia, Xiaobo Liu
Summary: This passage introduces a special engineering plastic, polyarylene ether nitrile (PEN), which is suitable for use in harsh environments. By using a specific preparation method, the linear polymer is converted into a 3D network structure, resulting in enhanced performance.
Article
Polymer Science
Ying Zhu, Yumeng Luo, Xiran Tang, Lifen Tong, Xiaobo Liu
Summary: In this research, h-BN was added to PEN as a filler to improve its thermal conductivity and electrical insulation. The influence of filler content on properties was studied in depth. The results showed that the thermal conductivity of the composites increased to 0.5444 Wm(-1) K-1 at 30 wt% filler content, with a 22.89% increment compared to PEN copolymer without additive. The PEN/h-BN composite exhibited excellent thermal properties and improved dielectric constant and insulation performance. The tensile strength was 62.3 MPa and the elastic modulus was 3567.5 MPa. In conclusion, the 30 wt% h-BN/PEN composite prepared in this research has great potential and promising prospects in the field of electronics.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Liang He, Lifen Tong, Yunqing Xia, Guo Lin, Ting Wang, Wanru Zhang, Yingfa Liu, Xiaobo Liu
Summary: A novel polymer was prepared by combining phthalonitrile end-capped polyarylene ether nitrile (PEN-Ph) and bisphthalonitrile (BPh) using post-solid phase chemical reaction technology. The mechanical properties of the PEN-Ph/BPh composite materials were significantly improved by changing the pre-polymerization time of BPh. Furthermore, the composite films exhibited excellent thermal properties and dielectric stability, making them suitable for use in high-temperature electronic fields.
Article
Materials Science, Multidisciplinary
Shaozhe Shi, Xia Liao, Wanyu Tang, Pengwei Song, Fangfang Zou, Zuoze Fan, Fumin Guo, Guangxian Li
Summary: The PEN/POSS foams exhibit ultralow dielectric constant, lightweight, high thermal stability, and excellent mechanical properties, showing great potential in the application of microelectronic devices.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Materials Science, Composites
Feng Gao, Renbo Wei, Lingyun Zhou, Wei Luo, Zhiqiang Li, Lingyun Pang, Shuang Li, Xiufu Hua, Lingling Wang
Summary: This study synthesized SPEN@CCTO/PEN nanocomposites by modifying hydroxylated CCTO with SPEN and integrating it into the PEN matrix. The nanomaterials effectively prevented agglomeration of CCTO and improved interfacial adhesion, resulting in superior dielectric characteristics and energy storage density. Furthermore, the excellent mechanical properties make SPEN@CCTO/PEN a promising flexible dielectric material for future applications.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Ying Zhu, Lifen Tong, Xiaobo Liu
Summary: A novel series of polyarylene ether nitrile (PEN) random copolymers with higher T-g and improved mechanical and electrical properties were synthesized. The performance of PEN random copolymer could be controlled by adjusting the mole ratio of BP to ND. The copolymers with 15% ND exhibited the best comprehensive performances.
HIGH PERFORMANCE POLYMERS
(2022)
Article
Materials Science, Composites
Bo Li, Xiaoqian Xu, Dengxun Ren, Zexu Fan, Mingzhen Xu
Summary: In this study, a BA-ph/BPA-PEN composite film was prepared by modifying BA-ph resin with BPA-PEN. The introduction of BPA-PEN facilitated the polymerization reaction of BA-ph resin and directly affected the polymerization reaction of the benzoxazine ring and the cross-linking reaction of the nitrile group. The increase in BPA-PEN content led to the appearance of a phase reversion structure, promoting the improvement of mechanical properties. The system exhibited good thermal performance, with a higher Td5 and char yield compared to the pure BA-ph system.
COMPOSITES COMMUNICATIONS
(2023)
